20745000

素因数分解:

$2^3\times 3^2\times 5^4\times {\mathrm{461}}^1$

素因数の和:493

約数の個数: 120

約数和(自身を含む): 70360290

約数和(自身を除く): 49615290

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 125, 150, 180, 200, 225, 250, 300, 360, 375, 450, 461, 500, 600, 625, 750, 900, 922, 1000, 1125, 1250, 1383, 1500, 1800, 1844, 1875, 2250, 2305, 2500, 2766, 3000, 3688, 3750, 4149, 4500, 4610, 5000, 5532, 5625, 6915, 7500, 8298, 9000, 9220, 11064, 11250, 11525, 13830, 15000, 16596, 18440, 20745, 22500, 23050, 27660, 33192, 34575, 41490, 45000, 46100, 55320, 57625, 69150, 82980, 92200, 103725, 115250, 138300, 165960, 172875, 207450, 230500, 276600, 288125, 345750, 414900, 461000, 518625, 576250, 691500, 829800, 864375, 1037250, 1152500, 1383000, 1728750, 2074500, 2305000, 2593125, 3457500, 4149000, 5186250, 6915000, 10372500, 20745000]

約数ペア:

[(1, 20745000), (2, 10372500), (3, 6915000), (4, 5186250), (5, 4149000), (6, 3457500), (8, 2593125), (9, 2305000), (10, 2074500), (12, 1728750), (15, 1383000), (18, 1152500), (20, 1037250), (24, 864375), (25, 829800), (30, 691500), (36, 576250), (40, 518625), (45, 461000), (50, 414900), (60, 345750), (72, 288125), (75, 276600), (90, 230500), (100, 207450), (120, 172875), (125, 165960), (150, 138300), (180, 115250), (200, 103725), (225, 92200), (250, 82980), (300, 69150), (360, 57625), (375, 55320), (450, 46100), (461, 45000), (500, 41490), (600, 34575), (625, 33192), (750, 27660), (900, 23050), (922, 22500), (1000, 20745), (1125, 18440), (1250, 16596), (1383, 15000), (1500, 13830), (1800, 11525), (1844, 11250), (1875, 11064), (2250, 9220), (2305, 9000), (2500, 8298), (2766, 7500), (3000, 6915), (3688, 5625), (3750, 5532), (4149, 5000), (4500, 4610)]